This is 12 Gauge Federal Premium PRAIRIE STORM 2 3/4" 1 1/4 oz. #6 Shot Ammo. Prairie Storm loads offer tight patterns and maximum penetration on pheasants and other upland game birds. Loads feature a mix of copper-plated lead (70%) and nickel-plated FliteStopper lead (30%) which provides for better performance at longer ranges. Muzzle velocity is 1500 fps. This ammo comes packed in 25rd. boxes.